sfGuardForgotPassword:
  options:
    symfony:
      form:   false
      filter: false
  actAs: [Timestampable]
  columns:
    user_id:
      type: integer
      notnull: true
    unique_key: string(255)
    expires_at:
      type: timestamp
      notnull: true
  relations:
    User:
      class: sfGuardUser
      local: user_id
      type: one
      foreignType: one
      foreignAlias: ForgotPassword
      onDelete: CASCADE